Ship&#39;s ventilating-cowl



. BROWN.

SHIPS VEN'HLATING CDWL.

APPLICATION FILED rvmH.1, .192n.

.Patented May 24, 1921.

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UNITED STATES PATENT OFFICE.v

SHIPS VENTILATING-COWL.

Specification of Letters Patent.

Patented May 24, 1921.

Application filed March 17, 1920. Serial No. 366,519.

To all fui/tom t may concern:

Be it lrnown that I, TrrnorHiLUs M. BnowN, a citizen of the United States, residing at Seattle, in the county of King and State of llashington, have invented certain new and useful Improvements in Ships Ventilating-Cowls, of which the following is a specification.

lIhis invention relates to improvements in ship ventilating cowls, and has for its object the provision of a closure for the ventilating pipe of simple construction that can be readily manipulated to close said passage in case of fire and to prevent the entrance of moisture. Y

The invention consists in the novel construction and combination of parts of a closure for ships ventilating pipes, as will he fully described in the following specilication,` illustrated in the accompanying drawings, and finally set forth in the appended claim.

In the accompanying drawings, Figure 1 is a view in vertical section of a ships ventilator with an embodiment of my invention shown in closed condition therewith, and the same shown in open position by broken lines. -I"ig. 2 is a view in cross-section on line 2-2 of Fig. 1.

Referring to said views, the reference numeral 1 designates a cylindrical ventilatingl shaft or pipe that extends from one of the upper decks of a ship downwardly into the interior of the ship to supply fresh air.

2 indicates a band of metal encircling said pipe supporting the lower end 3 of a cowl 5 whose upper extremity is turned at an angle to its lower end 3 and enlarged or flared in the usual manner.

At its throat, or about where the bend in said cowl begins, a substantially circular metal collar 6 is tted to the interior diam* eter of the cowl. Said collar consists of an upwardly extending circular flange 7 and externally thereof a marginal flange 8 which is molded to fit the adjacent walls of the cowl to which it is secured by rivets 10. The flange 8 is somewhat offset from the flange 7 to afford an annular trough 11.

The collar is tted to the interior of the cowl-throat on an incline so that any water entering the trough will drain forwardly and over the front lower edge of the cowl.

12 indicates a metal-plate cover arranged to completely cover the opening in the collar and will lie snugly thereover. rThe cover is hinged at 13 at the rear and diametrically opposite is provided with a hasp 111 which is engaged by a swing bolt 15 and butterfly nut 16 to form a latch easily and quickly operated.

Normally, the ventilator will be open and the cover will be raised, as indicated in broken lines Y in Fig. 1, in which position it is retained hy a latch 17 engaging the hasp 14. Y

The invention is very simplev and easily understood both in construction and mode of operation. In good weather the cover is raised and the ventilator is open to afford an influx of fresh air to the interior compartments of the ship. IV hen, however, the weather becomes stormy and rain or spray is liable to enter the cowls, the covers are swung downwardly to close the opening and secured by the latch devices 15 and 16. Any water getting into the oowls will drain into the trough of the collar and over the forward edge of the ventilator.

In case of re the ventilators are heret0- fore hurriedly turned away from the direction from which the wind is blowing to allow as little air as possible into the linterior of the ship. lVith this device the air can be completely cut oft at least as quickly as the cowls can he turned around, and the inrush of air is completely cut off.

Having` described my invention, what I claim, is-

In a ships ventilator pipe, a collar havinga flange riveted to the interior of the pipe, and a second flange inset from said first named flange forming` a circular trough, the forward portion of said collar being set in the throat of said pipe approximately level with the lower edge of the pipe opening, the rear edge of said collar being set above said forward edge to provide drainage for said trough, a cover plate hingedly connected at its rim to said collar, and latch devices to. secure said cover plate in open and in closed positions.

Seattle, Washington, March 10, 1920.

THEoPHrLUs M. snowu. 

